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OONOPIDAE SPECIES DESCRIPTION
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Orchestina ranchogrande       Get publication



            Male (PBI_OON 1665). CEPHALOTHORAX: Carapace orange, without any pattern, ovoid in dorsal view, pars cephalica slightly elevated in lateral view, anteriorly narrowed to between 0.5 and 0.75 times its maximum width, with rounded posterolateral corners, posterolateral edge without pits, posterior margin not bulging below posterior rim, anterolateral corners without extension or projections, posterolateral surface without spikes, surface of elevated portion of pars cephalica smooth, sides smooth, thorax without depressions, fovea absent, without radiating rows of pits; lateral margin straight, smooth, without denticles; plumose setae near posterior margin of pars thoracica absent; non-marginal pars cephalica setae present, scattered, only sockets were observed; non-marginal pars thoracica setae present; marginal setae absent. Clypeus margin unmodified, curved downwards in front view, high, ALE separated from edge of carapace by their radius or more, median projection absent, slightly sloping forward; setae present. Chilum absent. Eyes six, well developed, posterior eye row slightly recurved in front view, PME largest, ALE circular, PME oval, PLE circular; posterior eye row recurved from above; ALE separated by more than their diameter, ALE-PLE touching, PME touching throughout most of their length, PLE-PME separated by PME radius to PME diameter. Sternum as long as wide, pale orange, uniform, not fused to carapace, median concavity absent, without radial furrows between coxae I-II, II-III, III-IV, radial furrow opposite coxae III absent, surface smooth, without pits, microsculpture covering entire surface, sickle-shaped structures absent, anterior margin unmodified, posterior margin extending posteriorly beyond anterior edges of coxae IV as single extension, anterior corner unmodified, lateral margin without infra-coxal grooves, distance between coxae approximately equal, extensions of pre-coxal triangles absent, lateral margins unmodified, without posterior hump; setae sparse, dark, needle-like, evenly scattered, originating from surface, without hair tufts. Mouthparts: Chelicerae, endites and labium pale orange. Chelicerae straight, anterior face with conical apophysis; without teeth on both promargin and retromargin; fangs without tooth-like projections, directed medially, shape normal, without prominent basal process, tip unmodified; setae dark, evenly scattered; paturon inner margin with scattered setae, distal region unmodified, posterior surface unmodified, inner margin unmodified, laminate groove absent. Labium rectangular, not fused to sternum, anterior margin not indented at middle, same as sternum in sclerotization; with 6 or more setae on anterior margin, subdistal portion with unmodified setae. Endites distally not excavated, serrula present in single row, anteromedian tip unmodified, posteromedian part unmodified, same as sternum in sclerotization. ABDOMEN: ovoid, without long posterior extension, rounded posteriorly, inter-scutal membrane rows of small sclerotized platelets absent posteriorly; dorsum soft portions pale white, without color pattern. Book lung covers large, round, without setae, anterolateral edge unmodified. Posterior spiracles not connected by groove. Pedicel tube medium, with fringe of setae, scuto-pedicel region unmodified, plumose hairs absent, matted setae on anterior ventral abdomen in pedicel area absent, cuticular outgrowths near pedicel absent, abdomen separated from prosoma. Dorsal scutum absent. Epigastric scutum absent. Postepigastric scutum absent. Spinneret scutum absent. Dorsum setae present, dark, needle-like. Epigastric area setae uniform, dark, needle-like. Postepigastric area setae present, dark, needle-like. Spinneret scutum with fringe of long setae. Dense patch of setae anterior to spinnerets absent. Colulus present. LEGS: tarsi legs are separated in both sexes and mixed in the same vial. They ahve no spination, fourth femur swollen, two tarsal claws. GENITALIA: Epigastric region with sperm pore not visible; furrow without omega-shaped insertions, without setae. Palp normal size, not strongly sclerotized, right and left palps symmetrical, proximal segments pale orange; embolus dark, prolateral excavation absent; trochanter normal size, unmodified; femur normal size, two or more times as long as trochanter, without posteriorly rounded lateral dilation, attaching to patella basally; patella shorter than femur, not enlarged, without prolateral row of ridges, setae unmodified; tibia trichobothria not examined; cymbium pale orange, ovoid in dorsal view, not fused with bulb, not extending beyond distal tip of bulb, plumose setae absent, without stout setae, without distal patch of setae; bulb pale orange, more than 2 times as long as cymbium, stout, spherical.
Orchestina ranchogrande, male carapace, anterior view (image by MI, specimen ID: ---01665)

ORCHERANCHmpcara01665MI.tif

Orchestina ranchogrande, male carapace, dorsal view (image by MI, specimen ID: ---01665)

ORCHERANCHmpcard01665MI.tif

Orchestina ranchogrande, male carapace, lateral view (image by MI, specimen ID: ---01665)

ORCHERANCHmpcarl01665MI.tif

Orchestina ranchogrande, male carapace, ventral view (image by MI, specimen ID: ---01665)

ORCHERANCHmpcarv01665MI.tif

Orchestina ranchogrande, male palp, retrolateral view (image by MI, specimen ID: ---01665)

ORCHERANCHmdpalr01665MI.tif

Orchestina ranchogrande, male palp, dorsal view (image by MI, specimen ID: ---01665)

ORCHERANCHmppald01665MI.tif

Orchestina ranchogrande, male palp, prolateral view (image by MI, specimen ID: ---01665)

ORCHERANCHmppalp01665MI.tif

Orchestina ranchogrande, male palp, retrolateral view (image by MI, specimen ID: ---01665)

ORCHERANCHmppalr01665MI.tif


            Female (PBI_OON 1665). As in male except as noted. CEPHALOTHORAX: Carapace non-marginal pars cephalica setae dark, needle-like; non-marginal pars thoracica setae dark, needle-like. Clypeus slightly sloping forward; setae dark, needle-like. Eyes posterior eye row slightly recurved in front view. Sternum longer than wide. Mouthparts: Chelicerae anterior face unmodified. Female palp claws absent; spines absent; tarsus unmodified, patella without prolateral row of ridges. ABDOMEN: Pedicel abdomen separated from prosoma. Epigastric scutum weakly sclerotized, not surrounding pedicel, not protruding, small lateral sclerites absent, without lateral joints. LEGS: tarsi legs are separated in both sexes and mixed in the same vial. They hvve no spination, fourth femur swollen, two tarsal claws.
 

DISTRIBUTION

VENEZUELA
Orchestina ranchogrande coordinates
Click the following link for a map from Discover Life which displays the records below. You can click anywhere on that map to zoom in, and clicking on any point will display the full data for that locality Orchestina ranchogrande, Discover Life Map
 

MATERIAL EXAMINED
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PBI USI Country State Division Locality Sex Type Status Elevation(m) GPS Coordinate Habitat Collection_Date Collector Inst. Code
PBI_OON 00001665  VENEZUELA  Aragua  Maracay  Rancho Grande  1 Adult Female  Paratype  1200  10.40167; -67.58500    20 Dec 1954  A. Nadler  AMNH 
PBI_OON 00001665  VENEZUELA  Aragua  Maracay  Rancho Grande  1 Adult Male  Holotype  1200  10.40167; -67.58500    20 Dec 1954  A. Nadler  AMNH 


 
 
 
 
The American Museum of Natural History, New York, in collaboration with
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The Field Museum of Natural History, Chicago   George Washington University, Washington DC
 
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